We're given:
- Wavelength of s-wave = 2.3 × 104 m (which is 23,000 meters)
- Frequency of s-wave = 0.065 Hz
- We need to find the speed of the s-wave
- We know from the wave equation:
- Speed = Wavelength × Frequency
- Plugging in the given values:
- Speed = (2.3 × 104 m) × (0.065 Hz)
- = 1495 m/s
So the speed of the s-wave is 1495 m/s.
The key here is using the wave equation that relates wavelength, frequency and speed. Given two of those factors, we can solve for the third. I plugged the known wavelength and frequency into the wave equation to calculate the unknown speed.